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T. L. KENWORTHY 8v A. SILVBRS. MANUAL POWER MACHINE.

No. 67,315 Patented JulyBO, 1867.

uiten tutes atentffice.

THOMAS L. KENWORTHY AND AARON SILVERS, OF GOLLINSVILLE, OHIO. 12mmPaten; No. 67,315, dated July, 30,1867.

IMPROVEMENT IN MANUAL-POWER MACHINES.

"ro ALL WHoM 1T MAY ooNoERN.

Be it known that we, AARON SILVERS and Tnoxas L. Krxwonrnr, et'Collinsville, in Butler county, in the State of Ohio, have invented anew and useful Improvement in Manual-Power Machines; and we do herebydeclare that the following is an exact and full description thereof,reference being had to the accompanying drawings, and to the letters ofreference marked thereon. I

Figure 1 represents a top view of our invention.

Figure represen-tsV a front side elevation of the same.

The object of our invention is to so construct and arrange the mechanismof the manual-power machine as to avail of' the weight of the body ofthe operator, while it shall provide the most convenient andadvantageous position for him to exert his muscular power to propel themachine.

The rectangularframe A B rcstsifupon the extended sills C, the letterforming a broad base at the front side of the machine' below the treadleplatforms DD. The treadle-frames E E are hinged in the same verticalplane by means of the rollers 1 an'd 2, which are journalled in the twoend posts ofthe frame, as represented in the drawings. The double-crankshaft 3, resting in boxes on the central and front frame-pieces at 4 5,is provided with a hand-crank or winch, at the front side of themachine, and situated above the treadle-platforms D, and the other endof double-crank shaft 3 is progided with the large gear-wheel H, whichmeshes into the small pinion on the end of shaft I, which carries thebalance-wheelJand pulley K.

Through this gearing power muy becoinmunicated to drive a verticallyreciprocating saw, or, by means of belts, a rotary circular saw may bedriven. The machine may also be used to operate other mechanism, as willbe readily understood by millwrghts and oth-ers. i

When operating the machine, the operator will stand with bis right footon the'platforln D', his left foot on platform D, and with his righthand upon the handle h of the winch o. The natural movement of the bodyof the operator in pushing the crank o will bring the Aweight of hisbody upon the platform D', on which the right foot is placed, and whenhe pullsthe win'ch o towards him (and as it passes through the lowerpart of its circle) his body will swing backwards and thereby throw hisweight upon the platform or treadleA D, and these treadles D and D beingconnected by pitmenrs S with the two cranks on opposite sides ofthe lineof shaft 3, the treadles and hund-winch o will work together to propelthe machine. By this arrangement the operator will be afforded everyfacility for easily exerting`his strength, and at the same time movingthe weight of bis body to drive the machine.' In turning a winch aperson will necessarily oscillute his body, alternately casting itsweight upon each foot, and by the arrangement of the trendles and winchin the manner described, this natural,

and easy movement of the body of` the operator is availed of to propelthe machine, not only by muscular effort, but by the gravity of theoperators body.

We are aware that manualpowcr machines have been constructed with doubletreadles and levers, all operated by an attendant, but we do not claimsuch devices, either jointly or severally, our invention being confinedto our manner ofconstructing, arranging, and operating the treadles andwinch, which are so placed in relation to each other as to secure theadvantages hereinbefore set forth. l

Having fully described our improvements in manual-power machines, whatwe claim therein, and desire to secure by Letters Patent, is

The arrangement and combination of the trendles D and D', extending infront of the mainframe A B, and operating conjointhly with the'winch o,whenl constructed and applied in the manner und for the purposedescribed.

In testimony whereof` wehave hereunto set our hands this 25th day ofFebruary, 1867.

' THOMAS L. KENWORTHY,

AARON SILVERS.

Witnesses:

A. L. Prox, H. P. K. PNK.

